Grit Size vs. Surface Roughness

Comparing sandpaper grit size and surface roughness. This tool provides the relationship between sandpaper grit size and the resulting surface roughness measurement.

Grit Size vs. Surface Roughness

Approximate comparison of sandpaper grit size and surface roughness.

This calculator helps you understand the relationship between sandpaper grit size and the resulting surface roughness produced during sanding operations.

Grit Size	Surface Roughness (10⁻⁶ m)
80	1.8
120	1.32
150	1.06
180	0.76
240	0.38
320	0.3
500	0.18
600	0.13

Grit Size vs. Surface Roughness | MEPKit Engineering Tools | MEPKit